Ribbed metal cross bridging



8, 1951 F. J. MUSACCHIA 5' 2,565,875

' RIBBED METAL CROSS BRIDGING Filed April 16, 1949 2? INVENTOR.

[7546? (f MJMCZH X z Patented Aug. 28, 1951 UNITED" STATES PATENT'I 5mm;

. 2,565,875 RIBBED METAL onoss BRIDGING Frank J. Musacchia, Jamaica, N.Y.

Application April 16, 1949, Serial No. 87,985

1 Claim. 1

This invention relates to a ribbed metal cross bridging.

It is an object of the present invention to provide a ribbed metal crossbridging adapted to be extended between building joists which arereadily adaptable at their ends to the joists depending upon thelocation of the ends upon the joists and which are bent into position onthe joists as they are nailed to the same so that the flattened endswill lie flush with the joist faces while the bridging is effected bythe ribbed portions.

Other objects of the present invention are to provide a ribbed steelcross bridging which is of simple construction, inexpensive tomanufacture, easy to adapt to the building structure, easy to install,strong, durable, rigid and efficient in operation.

For other objects and for a better understanding of the invention,reference may be had to the following detailed description taken inconnection with the accompanying drawing, in which Fig. 1 is aperspective view of a single bridging member.

Fig. 2 is a transverse sectional view taken on line 22 of Fig. 1.

Fig. 3 is a perspective view of the cross bridging as effected betweenfloor joists.

Fig. 4 is a sectional view taken through the floor and the joist thereofand looking in elevation upon the cross bridging members.

Fig. 5 is a side elevational view of the cross members as applied tofloor joists in a slightly different manner from that in which they havebeen applied in Figs. 3 and 4.

Fig. 6 is a perspective view of stud joists with the ribbed crossingmembers applied to the same in two different ways.

Fig. 7 is a sectional view taken on lines l-1 respectively of Figs. 3, 4and 5.

Fig. 8 is a sectional view taken on line 8-8 of Fig. 6.

Referring now to the figures, I0 and H represent respectively thecrossed ribbed members. Each of these ribbed members is made out ofsteel and has flat end portions l2 with a plurality of nail openings I3therein. These nail openings are longitudinally spaced from one anotherin order to adapt the member to the difierent spacings of joists.Between the flat end portions l2 are ribbed portions M. This ribbing iseffected by an angular upsetting of the metal and flaring outwardly fromthe middle of the member. The members In and H are arranged between thejoists as shown in Fig. 3 to cross one another and wherein the flatportions I2 at the ends are bent, as indicated at 16, to lie upon thetop edge of the joists I! and at their lower ends, as indicated at I8,to lie upon the bottom edges of the joists. The bending of the flat endportions is effected as the members are connected to the joists. Theroot portions will remain unbent while effecting the bending of theends. The members, by engaging one another, will prevent the same fromlateral shifting through the joists. In order not to interfere with theflooring, as indicated at l9, Fig. 4, the upper ends of the members canbe secured to the vertical side faces of the joists, as indicated at 2I. The lower ends can be attached to the under edges of the joists inthe same manner as shown in Fig. 3.

In Fig. 5, both the upper and lower ends are attached to the inner facesof the joists, the lower ends are bent as indicated at 22.

As shown in Fig. 6, the members 18 and l l are applied between studjoists in still a different manner wherein the bent end portions 12extend vertically in the direction of the joists and the members liewholly between the sides of the joists, the bent end portions l2 lyingflush against the inner sides of the joists. These members can belikewise connected to the stud joists in the same manner as they areconnected to the floor joists as shown in Fig. 3, the end portions l2lying flush with the respective edges of the joists and the memberscrossing one another. Such arrangements as just described and as in Fig.3 are used where the joists are not to receive boarding on their edges.

It should be apparent that these members can be easily installed andthat they will have ample strength as a result of the angle throughoutthe major portion of the member. These members are fireproof and havelittle shrinkage.

As the nail is applied, the end portions l2 will be bent down upon thejoist edges.

It will be apparent that there has been provided a bridging which can bereadily connected to the joists by small nails and wherein the bridgingmembers are not impaired as are the wood bridging members which oftensplit and become dislodged from the joists. These members are fireproofand consume little space. It will also be apparent that these memberscan be formed by a simple stamping operation from strip metal.

While' various changes may be made in the detail construction, it shallbe understood that such changes shall be within the spirit and scope ofmember may be fitted to joists of irregular spacing.

FRANK J. MUSACCHIA.

REFERENCES CITED The following references are of record in the file oithis patent:

UNITED STATES PATENTS Number ,Name Date 11, 1,656,741 Lane a- Jan. 17,1928 Smith et al Mar. 20, 1928

